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Nonionic alcohol ethoxylate with balanced hydrophilic-lipophilic character for versatile formulation performance.
Excellent wetting, emulsifying, and solubilizing properties across a broad pH and temperature range.
Low foaming profile suitable for high-shear and industrial cleaning applications.
Good biodegradability and favorable environmental profile aligned with EU Detergents Regulation (EC No. 648/2004).
Stable in hard water and compatible with anionic, cationic, and other nonionic surfactants.
Industrial and institutional cleaners (I&I), including floor cleaners and degreasers.
Agrochemical formulations—used as adjuvant for pesticide emulsification and foliar spread.
Textile auxiliaries, particularly in scouring, dye leveling, and rinsing agents.
Paints and coatings—functioning as stabilizer and co-emulsifier in water-based systems.
Personal care cleansing products where mildness and low irritation potential are required.
| Chemical Type | Alcohol ethoxylate (C13–C15 linear alcohols, avg. 9–10 EO units) |
| Product Form | Pale yellow to amber viscous liquid |
| Appearance | Clear to slightly hazy, homogeneous liquid at 25 °C |
| pH (1% aqueous solution) | 5.5–7.0 |
| Active Content | 99–100 wt.% |
| Solubility | Freely soluble in water and common organic solvents (e.g., ethanol, ethyl acetate) |
| Cloud Point (1% aqueous solution) | ~65–70 °C |
| Primary Applications | Cleaning, emulsification, wetting, solubilization |
Q1: What is the primary function of Lutensol AO 109 in industrial formulations?
A: Lutensol AO 109 is a nonionic surfactant based on alkylphenol ethoxylate chemistry, primarily used as an emulsifier, solubilizer, and wetting agent in demanding industrial cleaning, metalworking, and agrochemical applications where stable performance across variable pH and temperature conditions is required.
Q2: Is Lutensol AO 109 suitable for use in low-foaming systems?
A: Yes — due to its branched ethoxylation pattern and molecular architecture, Lutensol AO 109 delivers inherently low foaming characteristics, making it well-suited for high-shear processes such as spray cleaning, CIP systems, and continuous metalworking fluid circulation.
Q3: How does Lutensol AO 109 perform in hard water environments?
A: As a nonionic surfactant, Lutensol AO 109 exhibits excellent tolerance to calcium and magnesium ions, maintaining emulsification and detergency performance in moderately hard water without requiring additional chelating agents in many standard formulations.
Q4: Can Lutensol AO 109 be blended with anionic or cationic surfactants?
A: It is generally compatible with most anionic surfactants under neutral to mildly alkaline conditions; however, compatibility with cationic species should be evaluated case-by-case, as interactions may affect solution stability or surface activity. Pilot-scale testing is recommended before full-scale formulation integration.
Q5: What are typical dosage ranges for Lutensol AO 109 in industrial cleaning concentrates?
A: Dosage depends on formulation requirements and performance targets, but it is typically used at low concentrations — generally ranging from 0.1% to 2% by weight — to achieve effective emulsification and soil suspension without excessive residue or rinsing challenges.
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